It all depends on the object...
A really dense object is hard to go through whereas a less dense object is easier to go through...
Hope this helped...
Sound is a pressure wave. Objects that "allow" sound to travel through them could be called wave guides.
Alfven wave
Could be either a * gravitational wave * electro-static wave * magnetic wave * or a combination of a electro-static and a magnetic wave (usually called light) In matter is could be a * compressional wave * siderial wave
There are no purely magnetic waves.
Distortion and static, as radio waves (assuming that's what you are talking about) are electro-magnetic by definition.
electromagnetic wave can be found in many different electrical objects
Alfven wave. You'd have had an answer sooner without the typo!
constantly changing electric and magnetic fields.
No. An electromagnetic wave IS electric and magnetic fields.
Electricity and magnetism are closely related. When you pass a current through a conductor, a magnetic field is produced. In continuously changing current, a disturbance is caused in the form of a wave, in both the magnetic field and electrostatic field. Hence electro-magnetic. Examples of this wave extends across a whole spectrum, including radio waves, x-rays and light.
an Electromagnetic Wave
an electromagnetic wave